8173249556 has 12 divisors (see below), whose sum is σ = 14308401492. Its totient is φ = 4085134848.

The previous prime is 8173249543. The next prime is 8173249633. The reversal of 8173249556 is 6559423718.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4374499600 + 3798749956 = 66140^2 + 61634^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360095 + ... + 382118.

It is an arithmetic number, because the mean of its divisors is an integer number (1192366791).

Almost surely, 2^8173249556 is an apocalyptic number.

It is an amenable number.

8173249556 is a deficient number, since it is larger than the sum of its proper divisors (6135151936).

8173249556 is a wasteful number, since it uses less digits than its factorization.

8173249556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744970 (or 744968 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 50.

The square root of 8173249556 is about 90406.0261044583. The cubic root of 8173249556 is about 2014.3344789064.

The spelling of 8173249556 in words is "eight billion, one hundred seventy-three million, two hundred forty-nine thousand, five hundred fifty-six".